Determination of cysteinesulfinate, hypotaurine and taurine in physiological samples by reversed-phase high-performance liquid chromatography
- PMID: 2866194
- DOI: 10.1016/s0378-4347(00)84599-5
Determination of cysteinesulfinate, hypotaurine and taurine in physiological samples by reversed-phase high-performance liquid chromatography
Abstract
Cysteinesulfinate, hypotaurine and taurine, which are key metabolites of cysteine, can be separated from each other and other closely eluting amino acids in biological samples by reversed-phase high-performance liquid chromatography on a Waters Nova-Pak C18 column. Samples were derivatized with o-phthalaldehyde-2-mercaptoethanol prior to injection. The elution system consisted of 100 mM potassium phosphate buffer, pH 7.0, with 3% (v/v) tetrahydrofuran with an initial isocratic phase at 1.2% acetonitrile and a gradient from 1.2 to 12.8% acetonitrile. This method is suitable for measurement of the production of metabolites from cysteine by isolated cells and for analysis of plasma and tissue extracts. Low levels of hypotaurine in rat tissues were easily measured with this method and are reported here for the first time.
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